the president put his hand on bibles owned by president lincoln and by doctor martin luther king, jr. and recited the oath of office. >> congratulations, mr. president. [ cheering and applause ] >> reporter: standing before the crowd of hundreds of thousands, president obama spoke about inclusion, cooperation and hope. >> you and i as citizens have the obligation to shape the debates of our time, not only with the votes we cast, but with the voices we lift in defense of our most ancient values and enduring ideas. >> reporter: as he was leaving the capitol steps the president paused to take in the spectacle. i'll never see this again he said before continuing to the parade. the obamas walked part of the route to the white house, then took their place in the reviewing stand. president obama talked about gun control, social security, gay rights. these are issues that he addressed throughout the campaign. so definitely taking an aggressive stance on some of those issues and urging republicans or congress in general to join him and unify over some of those really tough issues. one thing we